<template>
    <div class="son">
      <h3>我是Son组件（孙），{{car.name}}--{{car.price}}</h3>
    </div>
</template>

<script>
import { inject } from 'vue';

  export default {
    name:'Son',
    setup(){
        let car = inject('car')
        return {car}
    }
  }
</script>

<style>
  .son{
    background-color: orange;
    padding: 10px;
  }
</style>